Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5305533 | Combined direct and indirect rotary dryer with reclaimer | Donald J. Alexander | 1994-04-26 |
| 5083870 | Asphalt plant with segmented drum and zonal heating | Donald J. Alexander | 1992-01-28 |
| 4347016 | Method and apparatus for asphalt paving | Donald J. Alexander | 1982-08-31 |